User Responce Function Doubt

Hi All,

My requirement is,

1. Webi report having 2 prompts, (optional prompts)
   • State
   • City

2. If user selects more than 3 citys, i just need to show first 3 city names
   • Example:  User selected more than 3citys,  like Chicago, Portland, Boston, Tampa, New York.

o    In my report header i need to show only 3 city’s, like Chicago, Portland, Boston

How can i achive this.

thank you,

praveen